It's true that the creative vs. logical side of the brain is mostly a myth.

But the hemispheres absolutely DO specialize in very predictable ways. Core language faculties are almost always handled by the left hemisphere, for instance.

Face processing is almost universally handled by the right hemisphere.

We know these things from people who have suffered an injury to one of their hemispheres. A person with damage to the right hemisphere has a chance of not being able to recognize faces, but that's almost never seen in an injury that exclusively effects the left-hemisphere.

For the longest time Iain McGilchrist has been going on about left brain this, right brain that and it all felt very pop-psych stuff.

Not sure if because of that being sort of torn down but recent years he has been clarifying he wasn't talking about a literal left/right device but more an analogy to different modes of thinking.

There is some hemisphere function allocation but it feels far to over played in folks trying to offer easy answers to difficult things.

Thanks! Although I understand there is still some specialization in each of the hempispheres, which could influence it, but I probably went too strong with my imagination here.